Glass, cork, cobalt oxide
Overall: 3 3/4 x 5/8 in. ( 9.5 x 1.6 cm )
Cylindrical hand-blown colorless glass vial with cork stopper, filled with powdered cobalt oxide.
Denker, Ellen Paul. "Collector' legacies." The Magazine Antiques 167 (2005): 176-180.
Gift of Dr. John E. Stillwell
Due to ongoing research, information about this object is subject to change.